2014 GMC Sierra Denali

Routine

Owners filed 14 complaints about this vehicle with federal regulators, most often about the unknown or other. No safety recall has been issued.

What fails
ComponentReportsCrashesFiresInjuries
Unknown or Other3
000
Service Brakes3
000
Air Bags2
000
Wheels1
000
Structure › Body1
000
Service Brakes, Hydraulic › Foundation Components › Disc › Caliper1
000
Power Train1
000
Exterior Lighting1
000
Engine1
000

What owners reported

Newest filings
Exterior Lighting
Filed Jan 5, 202122,000 milesNV

HEADLIGHTS ARE EXTREMELY DIM MAKING IT DIFFICULT TO SEE AT NIGHT OUT IN RAINY CONDITIONS CAUSING A HUGE SAFETY PROBLEM WHEN DRIVING AT NIGHT. CAN BARELY SEE WHEN MAKING LEFT OR RIGHT HAND TURNS AS WELL CAUSING A HUGE SAFETY ISSUE AT NIGHT WITH PEDESTRIANS ARE IN A DARK CROSSWALK.

Air Bags
Filed Nov 23, 202099,320 milesFL

NEED A RECALL FOR AIR BAGS VEHICLE STATIONARY

Power Train
Filed Jun 22, 202069,000 milesMD

WHEN DRIVING AT HIGHWAY SPEED OR ACCELERATING THE BACK OF THE TRUCK WILL VIOLENTLY VIBRATE.AT TIME IT IS ALMOST UNCONTROLLABLE AND BECOMES VERY HARD TO STEER. I SO I HAVE RESEARCHED THIS ISSUE AND IT SEEMS THAT THERE ARE MANY COMPLAINTS ABOUT THIS EXACT ISSUES WITH 2014 TO 2019 CHEVY AND GMC TRUCKS. I JUST HAD THE ALIGNMENT DONE AND BRAND NEW TIRES PUT ON IT THE TRUCK 6-22-20. NOW THE TRUCK SHAKES EVEN MORE THEN IT DID BEFORE. *TR

Service Brakes, Hydraulic › Foundation Components › Disc › Caliper
Filed May 28, 2020109,000 milesIL

TL* THE CONTACT OWNS A 2014 GMC SIERRA DENALI. THE CONTACT STATED THAT WHILE DRIVING SHE HEARD A SQUEAKING NOISE COMING FROM THE BRAKES. THE CONTACT TOOK THE VEHICLE TO AN INDEPENDENT MECHANIC TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE CALIPER AND BRAKE PADS NEEDED TO BE REPLACED AFTER HAVING IT FOR A YEAR. THE VEHICLE WAS REPAIRED. NEITHER THE DEALER NOR THE MANUFACTURER WERE NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 109,000.*JB

Unknown or Other
Filed Jul 18, 2019CT

BRAKING SYSTEM FAILURE AT LOW SPEEDS.

Service Brakes
Filed Jun 28, 201920 milesTN

WHEN AT SLOW SPEEDS, BRAKES GET HARD AND HAVE TO PUT A LOT OF PRESSURE TO STOP THE TRUCK.

Service Brakes
Filed Mar 16, 201970,000 milesOK

IF THE BRAKES ARE PUMPED 2-3 TIMES THE PEDDLE WILL BECOME REALLY FIRM AND HARD TO PRESS. WHEN THIS OCCURS THE TRUCK WILL NOT STOP. YOU HAVE TO STAND ON THE BRAKE PEDAL WITH BOTH FEET TO GET THE TRUCK TO STOP. PRETTY UNNERVING FOR A 75K MIKE TRUCK STILL UNDER DRIVETRAIN WARRANTY BUT NOT COVERED. I USE THIS TRUCK FOR WORK AND HAULING MY KIDS. I DON'T LIKE HAVING MY KIDS IN THIS VEHICLE!

Service Brakes
Filed Jan 17, 201946,000 milesMA

VACUUM PUMP FAILURE WAS NOTICED WHEN PARALLEL PARKING. AFTER HITTING BRAKE SEVERAL TIMES THEY STOPPED WORKING. TOOK EXCESSIVE AMOUNT OF FORCE TO STOP VEHICLE.

Unknown or Other
Filed Aug 10, 201865,000 milesNC

AC CONDENSER SYSTEM FAILURE, LEAKS; MANY GM OWNERS ARE REPORTING THIS SAME EXACT ISSUE.

Engine
Filed Aug 8, 201878,000 milesNH

I STARTED MY TRUCK AND NOTICED A HEAVY SMELL OF GASOLINE COMING FROM THE HVAC VENTS. I STEPPED OUT OF THE VEHICLE AND NOTICED A LARGE PUDDLE OF (FUEL) GASOLINE ON THE PAVEMENT AND A CONSTANT DRIP OF (FUEL) GASOLINE COMING FROM THE REAR OF THE MOTOR. I PROCEEDED TO TURN THE VEHICLE OFF AND CONTACT MY LOCAL GM DEALER FOR ASSISTANCE.

Structure › Body
Filed Mar 11, 201826,000 milesNM

DASH CRACKED AT LESS THAN 26000 MILES 4 YEARS OLD

Unknown or Other
Filed Feb 19, 201855,000 milesMA

MY TRUCK IS SHAKING AT SPEEDS 65+MPH. I RECENTLY HAD MY FRONT END ALLIGNED AND TIRES REBALANCED STILL THE SAME SHAKING IS OCCURING. IT IS TO THE POINT THAT IT IS UNCOMFORTABLE TO DRIVE AND DANGEROUS.

Air Bags
Filed Oct 31, 201759,496 milesGA

WHILE DETAILING MY TRUCK ON OCTOBER 30, 2017 I DISCOVERED A CRACK ON THE DASH ABOUT AN INCH AND A HALF LONG RUNNING FROM THE TOP LEFT OF THE AIRBAG COVER TOWARDS THE DEFROSTER VENT . TOOK THE VEHICLE IN FOR SERVICING ON OCTOBER 31, 2017 AND THEY STATED TO CONTACT GMC CARES THAT THEY WERE FAMILIAR WITH THIS KIND OF PROBLEM. I CALLED GMC THEY STATED THEY WERE UNAWARE OF THIS PROBLEM ON MY MAKE AND MODEL TRUCK. THEY STATED THAT I NEEDED TO CONTACT THE DEALER AND HAVE THE DEALER CONTACT GMC. THE DEALER TOLD ME TO CONTACT GMC. AFTER DOING A QUICK SEARCH ON THE INTERNET I DISCOVERED THIS HAS BEEN AN ONGOING PROBLEM THAT GMC HAS BEEN AWARE OF AND IS NOT FIXING AND APPARENTLY THIS WILL ONLY GOING TO GET WORSE AS TIME GOES BY. THE SAFETY CONCERN I HAVE IS IT SO CLOSE TO THE AIRBAG ON THE PASSENGER SIDE THAT IF THE AIRBAG DEPLOYS IN A CRASH WILL CAUSE SHARDS OF BROKEN DASH TO FLY AROUND IN THE CAB INJURING THE PASSENGERS..

Wheels
Filed Aug 1, 201749,850 milesNY

CHROME WHEEL CORROSION. CRITICAL LOCATION AROUND VALVE STEM CREATING AIR LEAK IN VALVE STEM. COULD CREATE LOW ENOUGH PRESSURE TO EFFECT HANDLING IN EMERGENCY SITUATION. LUCKILY MINE WAS A SLOW LEAK, BUT THE ONLY FIX IS WHEEL REPLACEMENT AT EXTREME COST AND A LENGTHY REPLACEMENT PROCESS LEAVING THE OWNER WITH CHOICE OF UNSAFE USE, OR LOSING USE OF THE VEHICLE DURING THE PROCESS. INITIAL FIRST AID WAS TO CLEAN THE STEM HOLE OF CORROSION, USE A SEALANT AROUND THE NEW VALVE STEM, WITH NO GUARANTEE OF A SAFE FIX AND AN UPCOMING 2 WEEK TRIP TO UPPER ONTARIO CANADA IN FULLY LOADED VEHICLE.

14 of 14 complaints, reproduced as filed.

Across model years

Worst on record: 2016
YearComplaintsRecallsFiresDeathsAssessment
202011000Routine
201926000Routine
201817000Routine
201714000Routine
201630000Routine
201522000Routine
2014 — this page14000Routine
20138000Routine
201210000Routine
201128000Routine
201010000Routine
20097000Routine
200818000Routine
20071000Routine
20065100Routine
20054200Routine
200411100Routine
200213100Routine

Compare every Sierra Denali year →

Reading this record

No unusual pattern of severe incidents in the complaint record.

Complaint counts track how many cars were sold and how long they have been on the road as much as they track quality. A common model from 2013 has had a decade to accumulate reports; a rare one from last year has not. The signal worth weighing is in the severity columns, in whether the same component keeps appearing, and in whether the manufacturer eventually opened a recall for it.

Most recent recall on file: none. Source: NHTSA Office of Defects Investigation.